Clifford Tri Pac Setup

Good evening fam! I fell in love with the slant 6 and what it has to offer. I just picked up a rebuilt 904 and a tri pac manifold. NOS.

I seen the Weber 45 Dcoe is the premier choice. Are there any alternatives.

Also, do I have to use a drill press in order to make holes to mount the carbs!

I’m a newbie to the slants! Any help and guidance will be highly appreciated.

ECAE41BB-58DA-4736-97E2-2079E6F5C86C.jpeg