Ignition module and coil. Good ones. I do have a new U joint under the seat.
It's true that the type of driving has a big impact on expected parts wear. I like the starter idea. For what it's worth it wouldn't be a bad thing to have on hand. I have a tote that I use for all my tools and stuff, and there's definitely room for a starter. I think I'll just bolt the new solenoid to the fender so if it goes I only need to swap the wires over
With a manual transmission, a starter is a non-issue. I once drove for over a month with a bad starter. Just have to plan where you park a little so you can get it rolling. Ignition module is definitely a potential problem, I’ve had them go, but usually it just affects performance rather than a all out death at first, but could go either way. Doing the mod to relocate it to the fender can help prolong its life.
Definitely what you’re doing can play a part. My F-150 likes to break things, usually U-joints. It’s my work truck and a 300-6 linked to a ZF5 with a stage 2 clutch is a good way to put enough torque into the system that with the grip from a locker and good tires, it’s always looking for the weakest link. When it detonates a U-joint though, I often have to repair or replace something and that means things like torch, welder and driveline shop usually come into play so it’s not really a valid roadside fix in my eyes. Now if we are talking back when I broke the front axle shaft in my Choptop, it would have been nice to have a spare shaft on hand to slide in. As luck would have it though, had I actually had a spare with me, knowing what I do now (for some reason, potentially the lift brackets, the axle beams are apparently too close together), I would have either broken the spare shaft or broken something else (my cross pin has a definite ding).
So I usually don’t carry much in the way of parts, but I’m also not doing a lot of lengthy trips either. I like to analyze failures especially now and see if there’s a way to reduce or eliminate future breakage. Or if I want to accept a certain amount of breakage (like my F-150, if I upgrade the axle and joints to stop the breaking, is it going to say, eat my rear differential? A driveshaft is easier and cheaper to fix…). I do like to stock some of the more common items like brake parts at home though, so then I just have to rig to get home. Space is a premium on some of my trucks so the least amount I can carry and have a reasonable expectation of getting back home to where everything is, the better. That means tools and random bits like bailing wire, duct tape, pins, clips, fuses, bulbs, bolt and screw assortment, ratchet straps, etc are far more useful than hard parts that I may not need to get home or be able to do on the road side. If it’s really that bad that I can’t rig a way home, it’s likely all the way bad and that means the tow dolly gets fetched from home anymore.
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