RJC Megacooler - lower mounting tabs

[turbojimmy]

For those who have installed the RJC Megacooler, how have you attached the bottom tabs to the lower rad support? I have the radiator out of my car and thought I’d finally get those bolted down (I’ve had the intercooler installed for a while now). I see that those tabs correspond with some pretty big holes in the lower rad support. It would take a HUGE bolt to fill those holes. Do I drill new ones? The tabs don’t cover the holes completely so I might be able to get one of those clip-type things on there (like they use for the stock fan bracket, mounting the front shocks, etc.).

Thanks,
Jim