E350 means its a 1 ton van chassis (E150 = 1/2 ton, E250 = 3/4 ton). Same logic applies for Ford F-series pickups. You can find info on your engine and chassis on by entering your VIN on decodethis.com (assuming they go back 94 - they had my 98 E150). You may be able to get a manual for the van itself here: https://www.fleet.ford.com/maintenan...ls/default.asp
I've never heard of the Getaway - you should post some pictures.