Vehicle: 1993 Volvo 240 S/W
Need to replace shift assy , NSS, etc.
So - I'm in over my head, just need to decide 'which' part to use and 'how.'
Difficult to decide - should I replace with '93 part/s? Or retrofit (and if retrofit, WHICH year to convert to???) Factoring in - what's going to take the least modification of vehicle.
Will '91 and '92 shifter 'just bolt right in?' Will it fit in the bucket? Wires all line up & connect? Neutral Safety Switch - does it use same switch as '93? Solenoid???
Will I need to order other parts - (and what would they be)? ('93, '91-'92; '82-'90)
Is there anyone reading this who has actually converted their '93 shifter to an earlier one that can share the 'how'?
Shop won't offer an opinion so here I am again, turning to the online pros :)
[Last - I'm inclined to seriously consider used assy - would I need to order more 'associated parts' with used, or would everything be included with new assy?]

The following is what's prompted my post and inquiries:

****Suggestion received: "An earlier good used 240 shift assy will bolt right into your '93. And get a cover for it, as the '93 stuff has more added 'crap' on it (one year only) and has a larger length and width cover.
'91 and '92 shifters have the ignition cable interlock and a release solenoid on them.
'82 - '90 earlier ones don't have an ignition cable interlock or a release solenoid on them - both of which you can live without and both of which can be disabled / removed on yours, or on a '91 or '92 particularly IF that's the current problem with it...

91 and 92s will have the brake pedal solenoid release solenoid in it, so all wiring on them is the same as yours. but they do have a smaller plastic shift cover , which you would need for any shifter other than your 93. . . .

[My current shifter, referring to VADIS diagram 434 62705 - gate (7) is broken; NSS/PNP (29) and solenoid (43) need to be replaced, as well as minor connectors, screws, etc. that also need to be replaced.