C150 Vs C54

[Parmas]

I am thinking of replacing my C160 6spd transmission so I am thinking of using my stock gearbox which is a C150 or else the C54.

From research I think that the C150 is owned on yaris models between 2000-2005 while C54 is on 2006-2009 models.

The only drawback is that I will loose the much needed LSD of the C160 so I asked if the C160 LSD can be used on the C150 to "Bluevitz-rs" and he said that the diff do not match the c150 since it is 6bolt instead of 8. Although he said that a C54 diff match the C160.

I am really confused what to decide since the gear ratios of the C150 are better than the C54.

- If I choose to stay C150 I get better gears and I need to buy an LSD (which is expensive) for it

- If I choose to use C54 I get a slight loss of gears ratio but then I can use the C160 LSD

Also I do not know if the C54 and C150 dimensions are the same since I don't want any issues putting it or else not matching drive shafts.

Please help

C150 vs C54 Compared -> http://www.fatboyraceworks.com/gears...raph&Compare=1

Not sure if the C54 final drive is 3.545 please confirm