13B REW FOR SALE CAN BE FUN FOR ANYONE

k20a2/ k20a3 blocks Is there any key dif. between both of these. I'm speaking just the blocks. As in would a K20a2 block be described as a more sensible choice in sleeving about the A3? The A3 are so low cost to come back by so I just desired to know.Was a tiny bit dubious at the beginning even so the service was exceptional from commence to comple