351 Efi

Hey Everyone, Im a newbie here and im looking for some parts. I have a 95 Bronco with the 351 EFI, I was attempting to change my thermostat and coolant, well....... I broke the bolt on the thermostat housing. No big deal i knew it might happened, well i drilled out the center of it, and i tried an easy out, well i broke that off in it. You cant drill those out so i cheated my housing over and drilled a new hole and used an Heli coil. Well it worked for about 3 months and now its leaking again. So the part that im looking for is.

Lower Plenum
and a 4.9L 6 Cylinder Intake tubes that goes from the Throttle body to air box. If anyone has or knows anyone with these parts, Or could maby lookin local junk yards for me, I would really appreciate it! Thanks alot. Mike