Hello from Germany,
excuse me, but I don´t received your e-mails. I have in front 7x15 with 195-60-15 and in back 8,5 x 15 with 235-60-15 (But 255-60-15 fits also). No mini tube.The rear axle is a 8 3/4 E-Body axle and I shortend it, so that the 8,5 inch rims fits. I lowered the rear axle 2" and have E-Body springs with special offset shackles and offset front hanger bracket.Torsion bars are 1.160"diameter. The weight with the big block is 1.450kg.
Peter