I did a quick search
Originally Posted by Phil1934
240-260 stud is 32mm. Quest van is 47mm and about $2. NAPA 641-2785
For the rear you have to go with the 2.5" Nismo racing stud at $8 each or change threads and nuts. Quest won't help others as much as 280 is 36mm and 280ZX is 40mm.
Posted by 73Turbo240z
alright, just so everyone is playing on the same playing field of measurement, i did the math...
stock 240/260 = 32mm / 1.2608"
stock 280z = 36mm / 1.4183"
stock 280zx = 40mm / 1.5759"
stock Quest = 47mm / 1.8518"
so theres what we have stock, then theres aftermarket...
nismo race studs = 63.5mm / 2.5" (where?) $128.00 + s&h (16 exactly)
ARP ARP-100-7708 = 63.5mm / 2.5" (summit) $47.80 + s&h (4 sets of 5)
ARP ARP-100-7713 = 82.55mm / 3.25" (summit) $63.80 + s&h (4 sets of 5)