Without a doubt id go for the v4/5 type r which i have over the P1.....i had a P1 and loads have gone bang at 40k....not the best engine in the world and mine was on 39k so i sold it.
Now have a 98 type r with loads of goodies and what a car......much stronger engine and drivetrain than the P1 too......The P1 imo feels quite refined compared to the type r plus you get all the standard jap gismos like intercooler spray and adjustable centre diff on the R.

6-7k will get you a pukka one too

heres mine