TTI long tube headers and holley motor mounts

I’m a little confused. The Holley mounts are for V8 spool mount k-frames only and (I thought) the QA1 k-frame was biscuit mount only. Separate issue, just not following what you were going to do.
Sorry. I forgot to add that this was on E-Body stuff. Point being is different manufacturers parts not playing well together. TTI work with TTI, etc. So, since the Holley stuff moves engine forward, I would think the same issue would arise in an A-Body application.