1970 340 has the 1973 low compression pistons

Jeeze guys, I didn't want to start an argument or pissing contest. I was just looking for experienced advise because I'm an old guy but new to Mopar small blocks.
When I got my Barracuda the P-O installed a Torker 340, headers, some kind of RV cam and a junk single point chinesium distributor on a stock 318 with a beat 904 and the original 7 1/4 no gear one tire fryer, ran like ****. I put the 8 3/4 3.55 in, a 2 plane intake rejetted eddy 600 and it woke right up.
I'm on a budget and just want to try to get as much as I can out of the 340 without disappointment, I don't have the funds to take it apart and re do it if it's not a stout runner.
I will respect any input and appreciate any input but please don't argue over others trying to help.
Thank you.