i have a mate that works in the industry that deals with hayman reese at good prices inc supply and fit, im sorting out a group buy for the WA boys atm.
i bought this mint condition 89 S13 K's spec manual CA18DET, with HUD and genuine grade 4.5 with 59 000kms in 1999 from an importer for 11K, drove like it came from the showroom - slammed it, boosted it then stoopidly put it through a round about. back then there were no import yards around then and they brought in two other SR20 N/As in champagne gold and two tone cream one was a rare A's model.
your best bet nowadays is to pick up a stock lowish km aus delivered auto S14a like i did for around 7k as it has five stud conversion, turbo brakes and running gear and is already agood platform to work with. im doing a VH45de swap so lookn forward to some fun times soon.