We have the H&R spacers in stock, and have aggressive pricing, we can ship tomorrow. The only issue is with the DRM's, as they have been backordered forever, we've had our stocking order in since almost the beginning of the year.
DRS is not a big deal to switch the studs, here's a DIY if you want to know the process, and have worked flawlessly for hundreds of STILLEN customers.
STILLEN : H&R TRAK+ Wheel Spacers
Installation of DRS:
Front:
H&R TRAK+ DRS 15mm Front Wheel Spacer Install – Nissan 370Z : STILLEN
Rear:
H&R TRAK+ DRS 20mm Rear Wheel Spacer Install ? Nissan 370Z : STILLEN