Some diecasts were sacrificed but it is for the greater good. Wheels on the amphicar are from the forza 356, 914 from the bmw m3, 935 from the forza ford GT. I have one more amphicar to wheels swap but I need the right tires and axle size...I just do direct swaps. Haven’t tried custom making the axles yet. I am pretty happy w the results so far, in particular the 914.