New Truck or New Engine

Well, I have to put about $1k into it (brakes, rear seal, some belts, oil chg., road test, compression test, checking/testing here and there, some other stuff I forgot, etc., etc.). But, he gave it 2 thumbs up for 'easily' 50,000+ more miles. OK - so, peace of mind and my decision can be delayed. (At 'that' juncture, however, the 6.4L Hemi with 8 spds. is starting to look pretty good.)

Thanks much for the comments, options and help!