Speedtech ExtReme Subframe Differences? 1st gen Camaro vs Nova

[MadGoat]

While OEM subframes of Nova and 1st gen Camaro may be nearly identical, I see Speedtech lists different part numbers for their Nova vs Camaro ExtReme Subframes.

https://speedtechperformance.com/product/f1_x2_extreme-subframe/


https://speedtechperformance.com/product/extreme-nova-1968-1974-front-subframe/


Hoping someone can chime in today on what any difference may be before a call is placed to Speedtech on Monday.

THANKS!