What head is this?

[nismosil40zx]

Want to make sure this head will work on a redtop rwd. Mine doesnt have these numbers and some different casting marks on it, it is a 52F and on the back it is a
52F
3R just like that it looks the same...Will this work. Thanks

[codyace]

http://www.e-rak.com/cody/albums/album220/P1010033.sized.jpg

Yep, you'll be good to go :D

[jskateborders]

blacktop i think

[codyace]

My s13 blacktop has 52F as well on the head