Here's what I used to have.

73 Duster bought for $900
stock 360 bottom end with KB pistons and a comp 280h cam and lifters. One X head and one J head that when I got them had been port and flow matched. Had about a total of $1200 in machine work and parts.

904 trans with turbo action manual valve body about $400 in having it built and parts.

8 3/4 rear with 3.91 open carrier and drum brakes about $350 in parts and set up.

Front disc brakes off of an Aspen from a salvage yard and new calipers and pads and turned the rotors. = $250

Converter was the stock converter out of the /6 904 I took out of the car.

Bought wheels and tires. $750

Leaving in second gear the car would run

9.18 @ 84mph in the 1/8th
13.94 @ 104 in the 1/4

This was on street tires with an open carrier on cheap gas leaving in second gear (it would spin too bad leaving in 1st). 2.62 60 ft.

If I would have kept it and done a little more to it I am sure that it would have gotten much better.