After my non-motored sci-fi train toy conversion went off so well, I'd like to try my hand at a motored post-apoc or sci-fi train. To that end I'm going to want to start with a blocky diesel engine of some sort and probably something dual engined to carry the weight of whatever kitbashed cars I come up with. On ebay I'm currently looking at a K-line MP-15. It's used but has dual engines, looks to be in good shape (says it runs)f, comes with a box, and should be around $55 with shipping.
Is there anything I should be aware of with this engine? Are there another engines in the sub $70 range I should look at?
My other idea was to look for a used engine with damaged cab -as I'll probably be doing extensive conversions anyway- but I figure the more damaged somethign looks the more chances I'm probably taking that something inside is damaged too and I don't want to mess about with repairs if possible.