Bent Valves, Need help picking a new engine.

[AssassinTime14]

I bent the valves in my mirage recently while trying to install a set of the Mitsusport Racing Cams from thailand.
Unfortunately during the first installation the exhaust camshaft sprocket went on crooked, went to crank it and the chain popped. I've spent the last week or 2 resetting the timing chain, which was a lot of tearing the engine apart. I got everything lined up and reassembled in like 2 days. Still didn't start, No compression. Turns out when the chain popped, the pistons didn't lol. Also! The new cams have a larger base circle so they valves weren't closing anyways, the valves need new tappets for the new cams. Swapped in the stock cams, still no compression, asked a few mechanics and they suggested bent valves. I believe replacing the whole engine might be the cheapest route, rather than paying someone to fix the valve issue.

So I've got a few questions to ask

#1 How difficult is it to replace the engine?

#2 I've got a 5 speed transmission, so can a AT engine mate to my manual?

#3 I would still like to have the new cams put in eventually, so I don't think the engines with the roller cams will work? The racing cams are meant for the flat tappet valve type. Also do you guys think Mitsubishi would install my new cams for me after I replace my engine? Also the 2014-16 Engine would work as well right? there's no real difference if I recall.

#4 I need help picking a junked engine, I've found a few within driving distance.

Option #1





This one is a bit sketchy, a lot of possible front damage. Price: I have to give them a call later Mileage:14k
Year:2017 Trans: AT
Option#2





Better condition, Price: call, Mileage: 34k, 2017, Auto

Option #3





Might be in good enough condition, Price: 450$, Mileage: 17k, 2017, auto

Option #4





Price 450$, Mileage: 17k, 2017, auto

Option #5







Price 450$, Mileage: 39k, 2017, auto

Option #6



Price: call, Mileage: 72k, abit higher than the 32k on mine, 2015, auto

Option #7



Price: 600$ Mileage: 27k, 2015, manual

Option#8



Price: call, Mileage: not listed?, 2018, auto

option#9



Price: call, Mileage: 47k, 2014, auto

Option #10




Price: 450, Mileage 20k, 2018, auto

Option#11



Price: 500, mileage 27k, auto, 2018

Option #12



Price 500$ mileage: 67k, 2015, auto

Thanks for your guy's time, I'd love to hear your advice.