Wheel spin issues

Thanks guys for your input.
I'm running hooker super comp fenderwell headers, so the front needed to be raised for clearance, but I can bring it down maybe an inch.
I plan on running 1 set of street tyres and 1 set of semi slicks so I can still drive to the track. I'm looking at MH racemasters or MT ET's.

I'll get a set of SS springs and maybe some softer torsion bars and see how she goes.
The clamping of the rear leaf springs has already been done on this car, with clamps on the front and only a couple on the rear section.
I already have competition engineering adjustable drag shocks all round.
The pinion snubber seems to be a debatable subject, so I guess I'll put one in and see for myself.
I'm running 275/60r15 tyres on rear and was surprised with the wheel spin, but I guess 4.3 ratios will do that. :)

Will keep you all posted once I get the parts here.