Thanks for your opinions ..
Yassir .. it's gonna be a compromise car .. more on the 'touring' side than the tubbed out Pro Street side

An aluminum head Rat *I* think will do the deed nicely.. if I can get the rest of the drivetrain to put up with it

Figure 10" converter, manual shift, . . prolly 4:10's in the back.
For those who may not know ..my last project car was a 3020 lb '71 Duster powered by a tunnel-ram 440, 8" converter, 4:89 gears with tubs an 13x31's out back.
I drove it back an forth to work, an bracket raced it .. for over 15 years.
Never broke a single part on it. (replaced rear axles when they started showin a bit of twist .. after 10 years

Ran a best of 10.27 at Pomona long ago when I was tryin for their Pro Gas program (dint make the cut that day, but was a blast tryin! .. then I put the mufflers on an street tires an drove back home)
I am a certified gearhead .. I approach a project car as systems modification .. everything has to work together.. I dont slam a 600hp torque monster into a 6-cylinder drivetrain

I like the '69 Vette due to more leg room, bigger engine bay than the mid-60's, and the little shark grills on the side have chrome inserts .. will look very nice against a cherry red or medium-dark blue
Want to do a roadster, weather is great here and a chrome roll bar will look sharp.
The '427' hood looks great on 'em, too.
Mountain motor small block kinda appeals to me, but I am sure I can put together a nice Rat motor that will run on pump gas and loaf along at 70mph and perform the 'mission' better. A lil stroke magic on the new ones really boosts displacement, too

My old L-88 powered '64 Chevelle useda cruise great at 80 ..just onto the cam and smooth (it would lope badly in 4th at 60 ...600" lift and 332 duration ..with 4:10's inna back ..would do that) The 13:1 compression made it wind like a small block, and most folks thought it was -evil grin-.
Will see if I can find the bits ye mentioned Virg

-GE