http://www.ebay.com.au/itm/Garrett-G...item232aef7cd0
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That's at the engine flywheel. By the time it gets to your back wheels (which is what I stated) you would be doing well I make 90-95kw.
If you were to put the above figures back to the engine it would be up around the 160 mark
With the gtx2863 and front mount plus the low k's your rig has I wouldn't be to worried.
If you wanted more power then a bigger pump and turbo would be required and you would get injectors done as well.
Another good turbo that works well with the stock 11mm injector pump is a UFI TD05 18G but these will set you back around 2800 just for the turbo.
and do you not think i should not keep top mount even if i get a better one?
That's up to you mate. There is plenty of info around on these types of forums.
Top mounts get heat soak and to get one that works well (cross country) your looking at big dollars, water to airs work well but are a little complex (adding another cooling system) and front mounts are cheap and simple (plus you can work on the engine without anything in the way)
good point the more i think about it the more i just want to spend the bigger dollars
Have a look on patrol4x4.com mate. There is bundles of info on there about this exact thing.
Probably the best advice I can give you is read as much as you can on this subject and ask plenty of questions. Then make your decision take your time it can be very rewarding.