You can always buy the Camden (sold by LC Engineering):
![](http://lakebox.dnsalias.com/photos/1981%20toyota/supercharger/med/toyota2.jpg)
I don't know much at all about the KF setup - I provided you the reference on the KF on pirate in regard to who makes it.
Adapting propane shouldn't be a big deal on that setup, it's already setup for a weber.
I hear the stock 22r will knock at 6psi on pump gas. Propane should allow more boost.
My motor is low compression though...
Also - those positive displacement blowers aren't good for top end HP - great for torque though.. They're not terribly efficient.
-d