[D13]

292 P/S brackets don't fit the more common 250's, but the brackets are not all that rare as many 292's were equipped with P/S. Do you have the full set including the alternator bracket (if the alternator is on the driver's side)? Or is it one with the AIR pump above the P/S and the alternator on the other side (less desired it seems)? IIRC a full set with alt brackets goes in the $35-50 range. The AIR version seems to go $350 for the set. If you only have the cradle and not the upper brackets, there really isn't a market. For perspective, an eFlay seller has a new custom design for ~$125, ready for paint.
HEI, $25 tops. $15 most of the time. Depends on if it is the coil in cap or divorced coil version, and which one someone needs.