OK, I will start at the top, I ended up with the 882 heads because they were a part of a deal, 200$ for the heads, as set of crane roller rockers, and a performer intake, a sent a buddy to get them,he payed for everything and is keeping the rockers and intake, I have the option of the heads at 100$, if I want them fine, if not he will keep and I'm out nothing....the thmpr cams, the smaller one I had in a 350 a couple years ago, it was put in broken in, and that was it, the timing cover had a small crack that was unknown at the time, so when i replaced that I simply went with more cam, and threw this on a shelf, its clean and looks brand new, the mthr thumpr someone traded me for a comp 268 I had, he wasn't happy with it, I had the 268 on the shelf,I'm not sure if the mthr thmpr is good or not, never checked, didn't care, was just trying to help the guy out, but I know his initial break in didn't go well so it may be hurt. I'm more then willing to look for 416 heads again or even something better, that's not an issue, I just won't go new if I'm going to try and save for a blower next year, I have no idea until I get the heads off what's in it for pistons, I was told its a 355 with "true"flat tops whatever he means by that, I will know when i get it apart. Yes they are Sports man pros....I'm told when aired down they hook....but never tried a set. If they don't, I have access to 31" Goodyear slicks on drag lights whenever I need them tho...I would like to stay in the 456 or 513 range to maintain some highway drivability.....so, all this to say, both sets of heads are junk for a NA build, assuming the motor isnt hurt, and has flat tops, find heads in the 64 or 58 CC range again, and go from there. The rest is straight forward, it already has longtubes, throw a decent set of used heads, 1094 head gasket, a solid lifter cam suited to my gear choice and my 3000 stall, the performer rpm jntake, the holley 750, modify the hei, and enjoy it while paying for HER braces and saving up or blower build next summer....