Recommendations bottom end

[simso]

Hey guys,
I Have a 78 LT Camaro and want this old girl to perform. Ive looked at all the engine build up sites ect and have lots of good ideas, but what I want is a 78 350 that hauls ass. Now Ive already rebuilt the top end, but it didnt make the difference im after, the top end is currently a set of 64cc large valve pro topline heads, manifold is a holley contender with a 750 holley double pumper, cam is a performance crow comp 212-12-2 which has lift of .48 and .48, also runs yella terra roller rockers, and performance HEI dizzy, Ive spent about $2500 so far just on the top end. Now the car runs on gas so compression is not an issue, Im about to purchase a 350 block because the current block is a 327, the current block is still going strong and runs flat tops but I just cant seem to get it to perform like I want it to so hence the rebuild of a new block, now with rebuilding the bottom end I was thinking of going down the path of a stroked 350 to 383 with flat tops, is this worth the expense or should I just do a 350 with quality parts and decent compression. I want to keep all of the existing upper assembly as its probably got less than 5000 miles on it. Or am I barking up the wrong tree should this current setup with the 327 perform better, Any one got some good ideas, this is a daily driver and I do about 80 miles a day in her
Thanks Steve