the 13 x 7 will fit with the right offset
I have 205 / 60 / 13 advans on. the rear guards are rolled the fronts have twin cam flares.there is about a 10mm gap tyre to strut .the offset is critcal with trying to put 7" rims on a mk1 I have no idea what the offset is on these rims
pj
pistons are 1300cc I am not sure of the brand but they werent to expensive I think about $ 250 for the set I will find the box and let you know
juiceman
it seems to run well with the 45,s the head is well ported and I am only running standard vavles
I had it dynoed at 102 bhp @ 6250rpm
the bloke who built the motor has built hundreds of kent and other
motors and knows his stuff he is very old school