hello a have a stock 200 cid and a want to put a 250 cid (with ozzie head and triple su)in the car wath are the mods to fit it in my car the belhousing wil it fit on my stock 200 cid transmission or not a have now a 4 speed trans if a buy a bellhousing of a 250 wil it fit on my transmission and is it a big differens 200cid and 250cid thanks kristof