454 CID .400 tall deck BBC
Long rod
Modified 348 CID crankshaft
L88 heads with lightweight valve gear (old skool, Today I'd use Dart products)
Sheet metal manifold
Dual 1050's
A "REAL" Powerglide with external trans-brake
10" torque converter
and someplace to put it
dang we sure cant buy much muscle now maybe a roush mustang or a gss modified mopar .I had a 1967 Firebird that was on of those special order jobs. Tri-Power 400 cuin, rock crusher transmission and functional hood scoops. I put a Ford 9" with 4:11 posi-trac. My EX-brother in laws still talk about that car, 51 years later. They said it was the fastest car in three counties.
The car paid for itself, It was the most expensive car I ever bought, $7500 dollars. That was 1 and a half Cadillacs back then. I had one guy wanted to race for pink slips at the end of the run he blew by me and kept going, I never did get his pink slip.
I could have used a new Dodge Charger back then.