Ebay IAC - risky?
 

Hi, I am seeing IACs for a 99 on ebay for under $30, is that too risky, are they junk, simple on/off verses PWM?

I currently have an early 90s bpt with a "bp02" TB that is came with. The IAC is dead and they are super expensive in comparison to 99s IAC so I am considering a 99 TB and 99 IAC.

Is the Skunk2 TB for pre 99 compared to the 99+ basically identical except for the IAC mounting and holes?
Thoughts/Suggestions,

Thank you