BW ST-10 in 71 c-10

[lovemy71s]

I have a chance to get a hold of a st-10 for 400 bucks with a bell housing. I am hopefully going to be putting my pickup back together and want to ditch the th-350 auto. It has a mild built 350-punched .060, 280 comp, 9.5:1 compression, cast heads with 2.02-1.60 valves, weiand single plane with a 750 holley on top. Ive read mixed reviews on the bw st-10 but it is a 904 iron case but I believe it also has the 3.42 first gear. I'm sure this has been discussed before. Just looking for opinions. Its cheap enough. Also going to metion that I have a pretty heavy foot and that's why I'm also looking for a different rear axle option haha. I'm a newbie to this forum and appreciate any advice. thanks in advance
Jon