misterhemi, kudos to the hemi dart yer building. Reminds me of "Dandy" Dick Landy. Had a 70 Dart Swinger 340 myself. Racer Brown ST21 cam, 13:1 TRW's, Tarantula with 3310 on top, Hooker - then Mickey Thompson headers, MSD6a, ported heads, balanced, and all that good stuff. Then the gas lines showed up so I put in a stock 318 and sold it. Next came a 73 Powerwagon. Of course I couldn't leave that alone either so I put the 340 in to start. Got something like 16 mpg out of it till I threw a rod. Next came the 440 6 Pak, then swapped to 3310 for the sand dunes at Pismo and Glamis. Ported W-2 (stage IV) heads, 11.5:1 TRW's, headers, Sig Erson Hi RM-1 cam, MSD6a off my dart, and the usual balancing etc. Has posi all around. I ate many a Ford, Jeep, and sand buggy with that setup but then gas octane went to hell. Water injection put off the inevitable for a while but next came a relatively stock 440 out of a CHP cruiser. That's how she sits today - at least I still have it!
Friend of mine at work has a brand new, still in the crate hemi he bought back in the 60's. Tried to talk him ought of it but he won't budge. Says it's going into a bucket T someday.