are the SBR blocks 6 or 7 bolt?

[Dracon]

Not to be dumb... but I was looking at this block and I know it says it has 1G Big Rods, but is the block itself 6 or 7 bolt, or will it work with either... just wondering if it'll bolt up to a 97 head...

http://www.slowboyracing.com/more.php?id=1027&

 

[ADrewzki]

SBR blocks are usually 6 bolt. 7 bolt by order only. Yes, you can use your 97 head. You will have to drill out the holes 1mm larger. Basically read up on doing a 6 bolt swap.