depends on the manifolds you have.

some trucks had 2 center dump and some had a driver side center dump with a pass side rear dump "log manifold".

I put my 78 truck 440 in a 88 d100 and swapped it over to 2 center dump manifolds. all 90* plug boots.

I then went to hedman 79250 headers and run the same plug wire routing.

I have 4 wires down the pass side VC with 2 dropping down the back for the #6 & #8 2 down the back for #5 & #7 ( they would drop under the manifold/tuck behind tubes)

2 wires drop down pass side front for #2 & #4 with 2 droping down driver front for #1 & #3

I run a set of firecore wires with heat sleeves at the plugs.

nice/clean looking as far as plug wire routing.

**the pass side log manifold will have #8 90* boot/drop down from back, #6 will drape out over manifold using a straight boot. #2 & #4 drop down from front and use 90* boots.

driver side will have all 90* boots #5 & #7 run down pass side VC dropping down in back crossing over to driver side.

#1 & #3 drop down in front.

after market sets will have deferent boot angles to contend with so it is best to have a good look at them before buying a set.

I will see about posting a pic tonight if that helps.