Honda Accord EX?

Hey, i`m browsing some cars that I could buy in near future ..

And i`ve come across one of these .. Honda Accord EX V6 3.0 vtec coupe .. or whatever i`ts called ..

It`s 1999.. costs just under 1000eur but has a something around 90k miles on it .. Thats probably bull.. For that price I would expect more than 200k miles ..

What is the chance I can get the real mileage at some car service? Can someone who reduces the odometer reading delete it from the computer also ?

Also, it has a automatic gearbox (hate those), but as I understand for the 3.0 there is no manual gearbox .. So would it be possible to change the gearbox for manual, from, for example, newer gen Accord ?

I understand there`s a lot of work to be done for that, I don`t need everyone getting over emotional about that .. What I want to know is, if thats possible ? Would it even fit on that engine ?

PS. the gearbox has some kind of issue.. It slips from first to second gear .. So that would only make sense to change it ..(besides fixing it of course)

I checked out the prices of manual gearboxes.. they vary between 50 - 300 euros .. Not that bad .. I would need clutch and all sorts of stuff (pedals, linkages and stuff) .. But doesn`t seem that crazy in price

As i`m studying engineering I don`t have anything against working on the car so this would be more like a project car for me .. (On a strict budget and strictly for fun) ..