I am thinking on going coil near plug. I have the HOLLEY EFI system.
Does anyone make a mounting bracket that I can mount to my valve covers?
OR should I just make a mount that I can install on the back of the engine that will hold the coils and the computer and the normal other stuff???

I made 8 individual brackets that mounted with spacers and longer exhaust header/manifold bolts for my 548. Kept the coils below the manifold mostly out of sight and also allowed me to use standard truck short plug wires.

Did u end up selling that engine? If I remember right u made great power with that build. 730??? Going by memory.

Do you have any pictures?

It did run great and I wish I would have dyno tuned it and been done. I still have it, haven't had time to reassemble it and sell it. Had a piston that detonated for some reason melted (guessing autotune was to blame as O2 sensor went out). Found valve seats were also sinking so I had them redone along with head surface cleanup. I think I am going to ditch the Bob cam since it was hard on the seats (go figure). I haven't picked one out yet but have a few in mind, Lunati mainly. Figured that would be a better selling point anyways haha.

Tinkerer, shoot me your phone number in a PM and I'll send some to you. Was ridiculously simple little brackets and tube spacers.

I guess the stock GM truck valve cover mount is suboptimal since wires have to go right over the exhausts.

The L29 Vortec 454 was only produced for 1 year I believe 2000 that used CNP valve covers and are subsequently hard to find. Ones from the 8100 (496) metric motors look identical and nearly fit however the bolt pattern is slightly different. If you did have the OEM late L29 valve covers, you could just run a set of 496 MAG plug wires which would be long enough to go around the exhaust. Also the factory valve covers are short and would need spacers to clear any kind of tall roller rockers an stud girdles.

Could I just build a plate to mount all of the coils and computer vertically off the back of the engine?
OR would the longer not equal length plug wires cause a problem.

I am running JESEL shaft rockers but have a high lift cam (3/4 inch) would stock valve covers fit without spacers?