Check for hook in hull. Get a moisture meter or a surveyor who has on and check out everything. If possible remove floorboards from center of cockpit and check out tank and surrounding structures. Look for water damage around portholes, docking lights, and hatches (be nice to switch them around to open the other direction -factory did this in 1983), check for standing water in anchor locker and compartment(s) below v-berth. check for structural integrity in bulkhead between cabin and cockpit especially where windshield attaches through to deck.(can leak through to bulkhead). It would be great to check to see if water runs all the way through from forward compartment to bilge. (if not water can sit in unaccessible area below cabin sole). Don't expect the bolster to be in very good shape internally; if it is, that's an overall plus. It's a given that it will need new shifter/throttle/indicator cables. To the degree possible check condition of gimbal pivots pins, transom assembly, leaks from drives and propeller movement fore and aft and side to side. See if the hydraulics work for drives and K planes. Tail pipes and manifolds need a looking over unless it has the original log manifolds which you would probably replace anyway. Remove port driveshaft cover and check condition of the shaft and bearings and inner transom assembly. The tiller steering is probably loose and there are options for factory type repair unless you will go to external hydraulic steering (for a boats capable of 70+ mph). Good luck, I've had two 38's including a 1980 w/staggereds so feel free to PM me. Jeff