Well it has been a bit of a wait, Speedtech now has 2 versions for the 70-73 and 75-81
3" exhaust over the rear end is not an issue. 345 tires with NO FLOOR CUTTING. mini tub required obviously. ride height as low as the tire to fender well will allow. sa with the firs gen the only welding required is the rear shock cross member.
price with QA1 shocks is 2199.99 ridetech shocks are 250.00 upgrade.