I raced a an 88/40 on dry slick quarter miles with a 360 and it worked well. The 88/41 is going to be harder to get weight transfer to the rear wheels. If you are running high speed tracks with a wing it should work OK, but you are going to start out with more static weight on the front end. As far as radius rod lengths, the distance from the torsion bars to the axles should not change, so I would put the axles in the car, square them, set the front caster and level the birdcages and then measure the distance between the pickups. A bunch of websites have directions for setting the axle locations properly in the car. (I think DMI and speedmart have them on their websites) you can probably find a good video on YouTube also