About 6 years ago I built a P-40 warhawk kit. I'm just now getting around to buying an aluminum spinner. The instructions call for a 5" from Pica which is no longer available. I've found a Dave Brown or a Truturn. The Truturn is going to cost me about a $100 more. Does anyone know if the Dave Brown would work and what type of adapter kit and lock nut I could use. I have actually found an adapter kit but is sounds like it would not use a lock nut. Thanks