The original chip has a minimum rate of fire setting of 14bps, so you would need a new chip for current PSP rules anyway. However, just in case you want to give the old chip a try just for the hell of it, I found the following thread were a member wrote a very brief synopsis of the original Quest manual, complete with board instructions: -
https://www.pbnation.com/showthread.php?t=1443554
Knew we had the info somewhere - just took a while to find it.