Hey all,
Here is my problem, I have a 4200lb 1968 XL Galaxie 500 with a original 390fe, C6 auto and 9" rear. I want to run about 750 hp but from what I have been told a 390 can't handle it very long here is my options for the 390:

390 block with 427 cross bolted mains
Scat 445 Stroker kit with 8.0 to 1 compression
Blue Thunder Stage X or Edelbrock Stage 5 Heads
Large Bore 6-71 Supercharger
T-56 Transzilla Manual Transmission

Or I could do a 460 with a stroker hit, nice heads and a supercharger that I know can handle over 1000hp.

What do I do, I am torn between the two, I would like to keep the original block, but I want to run the car every once in awhile at the track. I want it to not be at its breaking point.

Help me out guys!