Quote Originally Posted by primespark22
ok i know a gsr is a b18c1 and a type r is b18c5 but what i want to know is will it say the number or what cause i 've seen them just say b18c no 1 or 5?
have to look at the head

they are stamped

also look at the oil pan they are stamped also

compression check also will tell

p72 gsr
p75 type r