i advise that you is save up a few beans and buy a chassis design book.
you will realize that 1 dimention is only part of the grand scheme of things.
ive done hack jobs on mini trucks that we enjoyed cruizin on the freeway @ 70 MPH and dump the frame on the ground, kinda fun, but dont try it at home!
ive done repair work on the ever so ugly "camaro clip" install on older truck/car chassis of the 40's n 50's
ive also seen a alot of frames built from scratch.
in my opinion is the best and safest way to begin any project. that way YOU can make it how YOU want it and not have to deal with hacking the frame up, adding to it, making it heavier and in some cases weaker.
im not dogging the people like cboy that use other frames in no way, i actually think his cars are bad a$5! and some of his documentation has helped me in ways that will stay with me forever.
learn what to do and what not to do from every car you see.
im building my first "ladder" frame from scratch. ive got
$212 in 2 x 4 box tubing
$100 in 2x2 & 2x3
$50 in consumables to build the frame.
right now its a rolling chassis (on casters)
i dont have any clear shots of just the chassis, but pics of my olds can be seen at www.lemanz.net/1930olds.htm