If you’re starting from scratch personally I’d look at the 9” just from a parts availability standpoint. If you‘re stuck on the “dump truck” rear the S60 is much easier for gear set up with its screw/cup side adjusters. I have 4.30 and 4.56 gears set up and it really doesn’t take too long to swap between the two once you get the pinion shim pack for each.
cage…. if I had to do it again I’d a gone molly. Mild steel was cheaper and at the time we just didn’t care much. Now I do . With materials costs these days I cringe to think what it’d cost!!
i‘m sure you’ve done your homework on the 9 deal. Chassis cert (every 3 years), competition license, pants/gloves/jacket and I believe by next year a HANS type device will also be required. Out west here it’s been a pita getting lined up with the tech guy to get recertification at times.
