for the trans mount the zzp urethane is fairly cheap but the fronts not worth it
easier to use the energy suspension ford trans mount with redrilling the cradle mount recess and horseshoe and buying two bolts and nuts and dep on how it sits level, up to a 1/4in steel plate spacer.
i remember finding an ES mount that would work on the drivers side trans mount but the redrilling and cost was about the same as the zzp urethane.
the zzp front was what 140? the ES you can find for 35 and maybe 15$ in bolts/hardware and drilling 4 7/16ths holes
ultimately drilling and filling good oem/aftermarket hydraulic mounts with rtv or urethane is far more cost effective for most builds.
i still think solid 4 corner bolting would be the best, you could ditch alll those heavy upper brackets that tend to bend the hell outta the core support.
toss some solid subframe mounts on there and the whole thing would be much more stable.
less weight above axle centerline, more below
moar racecar