Depends on how much work you want to do, and how much you want to buy. Also depends on whether you want steel or glass, original or reproduction.

If you want steel, check Brookville's website.
http://www.brookville-roadster.com/

If you want glass, check the Rod Shop
http://www.streetrodz.com/32roadster.shtml

Pete and Jakes makes a great frame - and about anything else you want for a chassis. You can buy parts or have them build the whole thing. There are a bunch of other chassis builders out there - TCI, SoCal for a couple.

Downs makes great bodies, but they tend to be on the high side.
http://www.downsmfg.com/documents.php?p=58

Get Streetrodder and Street Rod Builder magazines and look for ideas.

Don't buy anything that Gibbon made - or Street Beasts either.

If you want an original '32 roadster to build . . . good luck. Hen's teeth are more plentiful.