Brake - Line Lock Questions

[lts70]

I am wanting to place a line lock on my 70 chev SWB. I am converting to the new Wilwood D52 aluminum 2 piston caliper disc brakes on all four corners of my truck. I have never used my ebrake and I only use my parking brake when I want to jump out of my truck and leave it running and of course out of gear. I am wanting to use a line lock to cover that situation as well as for burnouts I supose, if that is possible. I have a couple questions.

1) Should I get a double system front/back or just front?

2) Do they work good? Has anyone used them?

3) Can they be used for burn outs? Edit: Found this one, see link below:

http://www.motorsportsdigest.com/tech/install2.htm

4) Any advise. Why I should or shouldnt do this.


Something like this.

http://www.summitracing.com/parts/HUU-1745000/