this is workin out (except money aspect) - £400 cash for the adaptors at 20mm thick (thinnest they will do), and just check my spare 6x139.7 wheels and they have a 4" negative offset, so in total a 4.75" offset, and therefore we are all good to go for interchangeable wheels/tyres between all trucks
except the 8 stud J20, but Im not goin 35's on that, im thinkin stock for a change, or maybe mini lift and 33's at most