there are differences between e99 and l99. nothing wrong with e99, very good engine and rods!. i own one and just turned 122k miles. bought it 7 years ago with 80k miles on it.
a word of advice.....no matter what you read, do not swap out the turbo system to l99! it's a step backwards imo
as the e99 out performs the l99 hands down when it comes to pulling a camper or flat bed. this is just my experiences over the years of trying a few diff things. as far as the billet ww2 wheel goes....don't waste your money unless the turbo whine bothers you. that's all that did in my truck, didn't lower egts
or improve turbo efficiency. if you put that chip on and start hearing a weird nose that sounds like it's behind the radio it's not the wheel it not turbo surge its the waste gate controller, set to soft. again my opinion, based on my experiences pulling a fifth wheel toyhauler camper. the l99 turbo spools 300 rpm late than the e99 and you'll hit higher egts
. no matter what others tell you, when pulling a camper you don't have large enough inj's to even really support 26 psi
boost. my e99 manual trans truck would see 1 psi
by 1200 rpm and with the l99 not until 1500 rpm. l99 runs 100* , roughly, hotter on egts' then e99.