C20let 2wd will easily and savingly let you reach 250 hp mark. 2.5V6 can be tuned to 200bhp with a couple of 3.0 V6 inlet cams and some cheap breathing mods.
It's hard to know wich way can be yours. I've drive both, turbo and NA engines and I'd choosen the NA big displacement solution and have swaped a 3.0V6 lump inside. Next step will be solve breathig limit of Cali v6 legdog inlet plenum wich affect maximum power on this engines.
A stock 3.0V6 with Omega Ecu and inlet, with a couple of better flowing exhaust manifolds can go close to 250hp mark and cost should be not so diffrent with a C20LET swap (you surelly spend less money on a v6 lump instead of a LET one).
What changes from this solutions is torque. A let engine will have a lot of torque only when turbo kicks at its max boost, this mean engine need allways to work over 3.000k rev limit to push hard. A NA 3.0 (wich basically have 211hp) have allways its torque, never thinking about go ahead of some rev limit to have performance. Both have a positive and a negative sides.
LET +
savingly tuneable to 250hp
lightweight than a V6 lump
tons of experience on it
tons of components
Higher MPG than V6
LET -
Engine more expensive
A lot of torque but less linear than V6
No good traction on 1st and 2nd gears
Known issue if not a coscast head
V6 +
Cheap engine
Good flat torque, allways ready
Exotic sound
Good power figure even on a 2.5 with a 100£ spent for a couple of 3.0 inlet cams
V6 -
Heavy engine
Lower MPG than LET
not a ton of different components available
Not really a high revving engine (exept for Y32SE wich is a steele crank)
If your plans are to go more on track than on curvy roads I'l go for a LET and be happy of its kick when turbo spools off.
If you like more to ride on curvy roads I'll choose a V6, wich let you enjoy more your travel with a good power reserve if needed.
My toughts guys, I hope nobody was offended by my opinions
cheers
