parts list" help" for IRS conversion...

i will be doing a irs conversion soonish 'WHENEVER I COLULD BE BOTHERED". itl be for my 64 track beetle... about 100 bhp..

so far i have off a type 3, torsion bars, brackets, spring plates,trailing arms. i might buy the adjustable spring plates though..

so which axles do i need ,length?? . ill be using, for the street 7 inch fuchs and for track 6 inch cookies on the rear...and should i buy the complete kit including CV'S.... or use the bus cv's if im correct.

what bushes for the spring plates and brackets??

and what would be the strongest irs beetle box as standard for now. a built box can come later...