Advisement?

Dont cheap out...If you can use fresh mounts,do it..Dont bother with the chrome bs studs either..Atleast use a wilson hd stud..If its on the mirror a 5 ft skip shooter or firestick with tuneable tips..1 or 2 is up to you but with all these plastic trucks with lil ground plane i would try two..As for coax,noooo trk stop crap again,go to a cb shop and ask for co phased(75 ohm) rg8..Be sure to ask him to chk it for shorts before you leave that shop...More work for you but will likely offer better results..
Oh when you tune the ant,do 1 at a time with a single coax..

 

Your gonna cost that man some $$$$$$$ for all that... depends on how deep into it he wants to go??? Didn't sound that deep to me

 

No, you can't run 75 ohm coax to a single antenna. A single stick presents a 50 ohm load.

 

Yes, turns up the modulation level and as long as modulation limiter is intact should not result in any damage to the radio, or cause any unwanted audio distortion or harmonics.

 

For a cheap setup and easy tuning, just run a single antenna, decent mounts, and good coax.
I'm running a single 5ft fiberglass right now, as my Wilson 2k was stolen off the truck lol. SWR is a bit higher at 1.6, but minimal effect on range imo.
Keep in mind I'm in the DFW metro, there is so much static on the radio I don't even run at full gain.

 

Run the single