The DP's are epoxies and should be used over the etch primer,but use the green(40) instead of the 90,it has the highest zinc content.Do all your bodywork on top of it.You can use it as a sealer too,but I don't like it because it stays soft so long-if you use the 401 hardner you have 3 days to topcoat without sanding.K36 is the surfacer to use over your bodywork,but don't try to replace bondo or putty with it,it'll eventually fail.It too can be used as a tintable sealer,but I only tried it once and seemed to work well.As tooter said,the NCS is nice stuff.I use the 2004 grey for sealing my bike work,but if you want black it's 2005.Not sure if there's a white or not.I really don't like whites for sealers,but I think that's because I have no use for DP48(white).It has no corosion protection at all and doesn't even stick that well to bare metal.Green DP is the best,but I have used red,black and grey as sealers in certain situations.
