I'm getting slightly confused. Too many variables at once. Too many issues at once. New info for the first time.
1. Yes, always take front clip off with a swap like this.
2. I don't remember suggesting a "Novak" design of something?
3. You said in first post you had a factory manual already?
4. "moving booster out of the frame rail and placing it on the fire wall" What booster?
5. The stock truck has a brake and clutch master cylinder, with reservoirs, on the fire wall. Some may have had factory power brakes. What does yours have?
6. The stock truck has a slave cylinder mounted to the passer side bell housing.
7. You said you were installing a 350 motor and now you mention a 454.
8. Many of us would love to have an older 454. Golden if near or before smog.
So lets reset here.
1. Mock up the motor and post some pics.
2. What side is the hole for the clutch fork on bell housing?
3. Do you want a hydraulic clutch or a mechanical clutch. It's up to you to decide. Then we can suggest ways to get there. Read above posts to get the history and options.
4. The headers/exhaust will be whatever they have to be, to clear whatever they have to clear.
5. I assume you got the motor mount from Trans Dapt. Does whatever bell housing you are using have side mounts? Pics?
6. So lets stick to one or two things and do the mock up and see what's what. The value of other parts to be sold is for a different post in a different forum section. Gotta manage the basic swap here. Motor and trans fit, HEI fit, motor and trans mounting, clutch plan.
Radiator, exhaust, steering, brakes will have to be synergized.
In a 4x4 swap, it's a little tricky situation. If the person is trying to use existing front axle, transfer case and all 3 drive shafts, then the front axle dictates the location of the motor. There is some adjustment due to the slip yokes. Not much. So... the front axle and it's driveshaft locates the Xfer case, Xfer case and its input driveshaft locates the trans and then the motor is attached to the trans, in a backwards assembly scheme. This is the description of a person like me who installed a donor 454, 350 TH, 205 transfer case, front and rear axles in a 56 GMC carryall. In your case, it's similar but you have a hard mounted divorced transfer case which locates the motor.
You can, of course, change the drive train and/or have driveshafts shortened or lengthened.
Just keep all that in mind.... and the Dry Bones song:
The foot bone’s connected to the leg bone.
The leg bone’s connected to the knee bone.
The knee bone’s connected to the.......
