motor mount problems

[firebirdzig]

So I bought my subframe from a 69 Camaro from a local custom shop. I didn't notice that they had welded on the 69 motor mounts. I ordered the Holley LS swap motor mount brackets, pan and crossmember. It calls for the mounts from a 74 Camaro. Here's my problem, they welded up all the holes so now if I cut the mounts out I still don't have any hole to use to mount the brackets to. Is there anyway to utilize the 69 mounts or does anyone know where I can find where to drill new holes for the mounts? Thanks for the help!

[Toddoky]

Hey firebirdzig, I answered your post over on ls1tech.