Does easier mean cheaper too? If only because I think lowering the cost would mean more business.
With Gen IV engines kit price is pretty much the same regardless of engine, our in house install prices are a bargain regardless of generation.
With Gen IV kits we already include a lot of additional items like a custom powder coated aluminum air intake tube, MAF sensor, EVAP canister relocation kit, stainless steel coolant bottle(aluminum oxidizes) with mount, fan spacer kit, new pre-programmed GM ECM, new pre-programmed GM BCM, vent solenoid, JK programming, fuel tank pressure sensor, 3/8" fuel line and a lot more. When you add it up it certainly is a lot of value for dollar.
With the Gen V installs we are using mostly OE wiring, modules and calibrations, we do not compromise power or ground distribution circuits, circuit protection or safety redundancies. If you source a donor Gen V engine with the required it will save you some dollars. We have not settled on Gen V pricing yet but we will soon.
At this time the Gen V 5.3 installs will not cost much more than Gen IV based purely on the cost of parts. The 6.2 liter engine is always in demand so the price changes accordingly. The Gen V 6.2's were way overpriced at first but are coming down, the 8 speeds are still overpriced IMO but the price is coming down.
At the end of the day if you look at the drivability and longevity of the LS engine it is a bargain IMO. Keeping the network and wiring OE means reliability, emissions compliance, functionality, serviceability.....
With our CAN now online we have some economies by not having to mod some parts but it's not much.
We have 6.2 Gen V's on the road now and they run awesome as we thought. We will have a Gen V 5.3 on the road shortly and I am excited to see the results. With good mid range torque from CVVT and high compression it may replace the gen IV 6.0. We found mpg with the Gen V 6.2 is really only better under a light loads vs the gen IV engines. You can get 1-3 mpg better with a Gen V 6.2 but you need to drive it like a Nanny and most of my customers don't. I'm hoping the Gen V 5.3 returns good mpg and performance. My wife's 2008 JKU with a LH6 5.3 engine gets 20+ mpg on the highway with 32" tires and plastic fenders, no winch. But in a heavy JK a 6.0 will get better mpg. Hopefully the Gen V 5.3 will bridge the gap and offer an economical power train with good performance on regular gas in a heavy JK.