P&N: Crossover Techs

[dumbluck]

I'm trying to figure out what all the crossover techs are, and I'm coming up blank on a couple. Here's what I've got so far:

O-C: BioCrystaline Armor
O-P: Telepathic Armor
O-T: Temporal Cloning
O-R: Drop Pod

C-P: P. Stun Crystal
C-T: Harmonic Shields
C-R: Healing Crystal

P-T: The huge bonus combat sensors I can't remember the name of
P-R: ????????

T-R: Spirit Crew Quarters

Am I way off base on any of these? Can/will anyone tell me what the P-R crossover tech is?

Thanx in advance for all your help!