can you take parts of one and put it on the other like body parts
most parts YES a few no. major body panels will interchange, list what parts you are thinking and mabey we can be more specific
yup. If you want one of the different front grill/headlight assembly you need that front core support to change. Other wise doors,fenders,hoods,bed,tailgate,bumpers,cabs, and so on will all bolt to each other.
I think in 97 or 98 the dash and seats changed looks though. My 98 had a way different style dash them my 96 or my 94
like front clip and doors
Motor is different after 96 or 97I believe and interior and dash changed in 1995