The best Contact Cement you can buy is DAP Weldwood HHR (High Heat Resistant) Landau Top and Trim Contact Cement.
http://www.dap.com/retail/retail_det...&prodhdrid=351
Here is a link to a place that sells it.
http://www.perfectfit.com/products/shopexd.asp?id=220
The part # for 1 gallon of it is DAP-0307. 1 Gallon id $12.50, 5 gallons is $44.