Small Block & Big Block Chevy Specific - 1999 firebird

I bought a 99 firebird rolling chassis backin october and im just now getting around to this swap.The previous owner had it as his drag car set up for a 350/350 combo.It still has the v6 k member but he had some custom motor mounts fabbed up to accept the 350 engine and also a trans bracket for th350.There is no wiring harness either since he was running a carb.Recently i purshased a 87 & up gen 1 sbc.The cowl was already notched for the other motor. Since this guy was running a older model 350, will i have issues with the newer style block?I know the distributor sits way back against the firewall but i was wondering if the newer block has a taller distributor?

no you wont what changes is the heads, and cam so you should be good to go. good luck

http://i1075.photobucket.com/albums/w430/PREDATORorPREY/bird.jpg
http://i1075.photobucket.com/albums/w430/PREDATORorPREY/bird1-1.jpg
http://i1075.photobucket.com/albums/w430/PREDATORorPREY/bird2.jpg
http://i1075.photobucket.com/albums/w430/PREDATORorPREY/bird3.jpg
http://i1075.photobucket.com/albums/w430/PREDATORorPREY/sbc.jpg
http://i1075.photobucket.com/albums/w430/PREDATORorPREY/ta.jpg

Does anyone know what motor mounts i need? I have the uppers that are bolted to the block, I need the ones that will attach the block to the brackets I have.

Looking at your brackets those are solid mount brackets they bolt directly to the block no mm inbetween

Thanks bro I appreciate your help. I talked to the guy that I bought the car from and that is what he told me also.

I want to paint my engine and motor mounts but they have rust on them. Will those rust converters work on the engine?