The 360 won't fit the S10 chassis without serious pan mods. There's nothing wrong with the IHC axle, and the 360 will have lots of clearance in the stock setup. Disc brakes and a 4WD power steering box will make it a pleasure to drive, and the axle can be dropped by any axle shop.
If you're really stuck on independent front suspension, I'd try a Volare X-member. Not a fan of MII crap. Too light for a truck, too light for a Pinto!!