the only reason you would consider a conversion should be if you can do it yourself. my car is engine converted however i got my friend to do it for me.
real world costs :
donner car £950
labour £500
belt kit £200 ?
then your talking what parts your going to change when your swapping everything over.
i changed all the bushes £200
bought cheep coilovers £200
braided brake hoses £50
then you have all your oils etc £100 +
theres more than that as well i replaced put away another £200 for other stuff
then mine had a problem when everything was fitted, got that fixed tracking done mot all in that cost another £300
then 4 miles into my first journey the power steering pump shat itself witch destroyed a belt/pully and the pump.
so its going to cost me another £4 - 500
ive made some money back on the non sport parts i didnt use maybe around £5 - 600
all in thats around £2600 - 2800
but thats just geting it running, what about the other parts you want to buy for it. i have ended up buying a lot more for it, decat/rarb/exhaust just to name a few things.
so it becomes rather expensive. buy a 172/182 a good one
my thread if you decided to do the stupid thing:
http://www.cliosport.net/forum/showthread.php?568782-Project-s**tbox-172-(In-Need-Of-A-Good-Tidy-Up)