I've just reshelled my glanza and it took me a good 3 weeks to get it done. I had no mechanical experience really except changing radiator and servicing. I wasnt out every day all day to be fair so I'd say its a solid weeks work to do it right. Its a tough job man, sadly my cars no where near done and it still needs a good few grand pumped into it to get it where i want it. (respray, remap, new coilovers etc...) Once its complete it will be totally worth it but its a lot of hard work man. Dont rush anything if you do go to do it as you will have to redo it later if its not right. oh and theres loads of differences between 96-97 and 98-99 models so stick to the same one u have. I had to cut new holes for wiring looms and swap the dash etc... Good luck with whatever you plan to do mate