May not be the bush... I have replaced mine but its (CTR) still rattling at top speed. Suspecting may be the Euro R Shift Knob. Some say you need to put a screw at the base. Any Opinion.
i dont know what it's called but in J's Racing catalog ( in Chris's place) got this blue kaler thingy look like the silicon bush which is said can improve such problem with the shifter....i dont remember how much it costs also....
About Manufacturer: Cosworth
"Over the years we have developed in-depth knowledge of engines, engine components and engine management systems. This has been successfully used to supply engines to...
my friend is using RXZ mcycle spark plug Denso
(same heat as NGK plug type 7)
on his vr4 engine since it's quite difficlut
for him to find cold type spark plug (type 6 above)
since turbo engine quite hot...
usually...