Wanting to put a pair of fork suspensions on my 1994 Kona Lava Dome. Not sure if I would need a threaded or non-threaded? Also I took the P2 fork off and measured it to be around 6" of steer tube, so how long would the fork suspension need to be? Any answers would be greatly appreciated! I've been seeing a lot of rock shox Judy popping up on eBay, and some Manitou ones also. Plus a local shop has piles of vintages shocks they might sell me.