You could just buy this:
Salvage 2003 Honda Insight For Sale
The VIN number indicates it's a 5sp, with A/C. It's "as is, where is", in Texas. But that Insight looks way too repairable to be a candidate for parting out.
Wipers - New blades are $2.50 a piece, but RainX is better.
Brakes - are there any Hondas with manual brakes, from which you could source a master cylinder?
Oil - take a reading with a real oil pressure gauge, and switch to "0W25" synthetic: a 50/50 mix of 0W20 and 0W30.
Full Insight guts swap - I will watch and take notes while you repackage the batteries, IMA computers, sensors, cooling fans, etc. I've thought about trying to free up space in my Insight's cargo hold, but I know that I am not smarter than Honda, so my efforts would have limited effect. Maybe I'll pull an old-school Subaru move and put the spare tire under the hood - or in the boattail. I'll elaborate on that pipe dream some other day.