The wireing is no big deal I had them through me a regular harness for a GM4500 4x4, theyll give you the runaround If you tell them exactley what your trying to do. I got in a Huge argument over this with the techs were I was trying to by the plow from :argue( of coars this was for the cab over In which they said I qoute " It Cant Be Done " "Where Sorry But You Can Not Mount Or Wire This Truck For A Boss Plow")

So I went in another day and delt with another clerk told him I wanted to by a plow for a 2005 GM 4500 4x4, Not a problem done.

Frustrations over!
Any how all you have to do is take off the connectors that are provided for the head lights and get some new ones from the hardware store to adapt, or just hard wire everything like I do. ( but my trucks are for long term investment and I'm not planning on selling any of them anyhow, So it does'nt bother me at all to hardwire. ) Other than the head lights you should'nt have any issues Adom. Espeacially on your truck the conventional cabs and larger trucks I've found are the easiest to work on.
As for mounting your plow I would just get 1/2" plate and mount it to the frame, and take 2" tube stock weld a 3"x6" angle stock 1/2" thick to both ends at your desired degree of angle drill out both ends and mount it with 3/4 " bolts to your frames. that way everything is adjustable for your hight, just in case you deside to change tires and rims. Just make sure you follow specs on setback depths and hight depths depending on which plow you choose.
Like I said earlier There is a huge difference between them when you jump to the 10' series in BOSS plows. If you need any specs on either contact me and I can fax you all the imfo that I have.:smoking