But now I want to add the underdrive pulley, I don't know if the UDP would be the same or where to buy a quality one? Anyone have any tips?

You do not want to do that...

Unless beat out mains is what you want.

The Fluid dampr would be the way if you want to upgrade.

The factory damper absorbs some of the harmonics of the crank, the solid underdrive will not.

Search around and you will find out about the fail that comes with the use of one.

Nice! Got a question tho for you what year block and head combo did you do been looking into this build a little just curious is all

^Same here im intrigued to find out more bout this swap..but any ways bogus is right bout the damper..suggest you do your research before you buy

Seth97gsx said:

Nice! Got a question tho for you what year block and head combo did you do been looking into this build a little just curious is all

Click to expand...

I have a 4gcs build. The block came out of a early 90s sonata

The head is a 92