There's no body to produce because if the Romans were true to form on this crucifixion (and no reason why they would have done different), then Jesus' body would have been thrown into a lime pit and disolved. This was done as regular policy in order to deprive the relatives of the body for any burial rituals.
Did some quick study and while by no means and expert you need to also look at the Jewish traditions. Just from quick searching I found a quick except from Josephus about the Jews burying those crucified so the Biblical account of Josheph of Arimathea seems to defiantly be plausible.
"Jewish War 4: Chapter 5
Josephus reports on the Jewish custom of taking down the bodies of those crucified by the Romans during the Great Revolt and burying them, if permitted, before sundown. This was in response to the Torah Mitzvah found in Deuteronomy 21:22-23: "When someone is convictged of a crime punishable by death and is executed, and yo9u hang him on a tree, his corpse must not remain all night upon the tree; you shall bury him that same day, for anyone hung on a tree is under God's curse."
2. But the rage of the Idumeans was not satiated by these slaughters; but they now betook themselves to the city, and plundered every house, and slew every one they met; and for the other multitude, they esteemed it needless to go on with killing them, but they sought for the high priests, and the generality went with the greatest zeal against them; and as soon as they caught them they slew them, and then standing upon their dead bodies, in way of jest, upbraided Ananus with his kindness to the people, and Jesus with his speech made to them from the wall. Nay, they proceeded to that degree of impiety, as to cast away their dead bodies without burial, although the Jews used to take so much care of the burial of men, that they took down those that were condemned and crucified, and buried them before the going down of the sun.
I should not mistake if I said that the death of Ananus was the beginning of the destruction of the city, and that from this very day may be dated the overthrow of her wall, and the ruin of her affairs, whereon they saw their high priest, and the procurer of their preservation, slain in the midst of their city."
Josephus' References to Crucifixion
From that website.
I am going to do a little more research on this topic and post if I find anything else.
Also to note that even Paul acknowledged Jesus' burial.
"4 We were therefore buried with him through baptism into death in order that, just as Christ was raised from the dead through the glory of the Father, we too may live a new life." Romans 6:4
And just off my own thinking you can conclude that Baptism was a staple even in the early Church. The Baptism symbolizes the burial and resurrection of Jesus. Do you really think the early apostles that were eyewitnesses of his death would do this if they had not seen him buried?
And as I have said in other posts, debating on the internet is going to go nowhere, and can go on forever. There are many other forums on the internet that are much suitable for debate where Christians much wiser than me can answer questions or critiques you have. I only got in this to show anyone who looks at these forums a creditable defense for Christianity. If people want to see more arguments I encourage them to check out