exhaust studs

they are all studs - or should be.
the 2 end ones (front and back) go through to water,and I have found some heads that have the odd centre ones that find water as well. if a bolt is in there and it is doing the job -leave well alone,but if you want that original look,put a stud in. do'nt forget the sealant on the end ones.

regards,Rod:-D