I have the USCT spring relocation kit and mini tub kit on my 69 dart and love it! They make high quality products, and yes you can put some major tire on after doing this. Personally I didn’t like the offset shackles, I just think they would possibly bind. I put a 275/60/15 under mine and there is stil a pile of room. Springs are 36” apart and I shorted my housing down to 48” flange to flange
Jeff
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