I've made no decisions yet. A freshening/upgrading of the engine is on my "wish list" but, as yet, is not on my "do" list.
To be honest, the 350 in the car still runs pretty good. What I don't like--never have liked since I bought a C5 in 2004--is the car's weight.
When the engine was done back in the day, the car made 413 at the wheels (I don't have headers and do have cats) which, considering the 18% loss of C4s, had me at a hair over 500-hp.
My 04 Z06 (430-hp LS6) was just about as quick or maybe a tick quicker, depending on the air and if my driving is on the mark, and I attribute that to the weight difference between a 95 ZR1 and the 04 Z06. I'm not going to gut my ZR1 into a Snake Skinner so the only other choice is to bump the power up another notch.
That's where I come up with the 368.
I was thinking of budgeting 10 grand for the engine upgrade and the R&R.
While I dream about more power, I've got the '95 out in the shop, upgrading the sound system. Easy and cheap jobs first, you see.