340 r.i.p.

You can get a lot more for a 6.1 crate than any other new hemi... and they are NOT a plug and play deal. Be prepared to Dyno map the hell out of it.

If you are looking for a cruiser with A/C, forget the 340. I've driven a '69 Swinger with 40K original miles that we restored and it fell flat on it's face with 3.23's, 727 and A/C. Those engines like stickshifts and tall gears. I'm almost certain that my 318 with the 302 heads would take it in a 1/4 mile.

Get a roller 360, as suggested above.