ENGINEFull case2 or 4 cyl? you can have both for the case.Rear Magcan and is done by several45hp buildcan and is done by several, even with just 2 jugsWould like electric startHas been done, but hand propping a 45HP is easy.AIRFRAMEDual wing tanks, welded aluminumCan be done easy enough, but then perhaps consider a header tank, well consider it anyway.Increase wall thickness and / or diameter of Landing Gear tubingBased on someones stronger design? or just estimating?Increase thickness of the 8 main attach gussetssame as number 2Covering for the cabin area only, rear boom uncoveredHas been donePossibly use the team max templates for the wing ribs (I have seen discussions about incorrect dimensions on the original templates / plan from Leonard?)idea here is to pick one and go with it.Position and strobe lightscan be done/has been done, yesPneumatic tires (not bicycle) with differential brakes Lots of eagle have been built without bike tires... so no new ground here.Regular seat with 5 point harnessdefine regular seat? Would you consider a Rans S6 S7 or S20 having regular seats? With thousands of them out there, I would-- and you can't get much lighter, so am not sure what critique is used to determine "regular"Standard covering system vs lightweight as in plansGenerally is based on weight/speed of aircraft, I guess this would depend on what your after...Tabs welded aft of the seat to accommodate a 5-10ga fuel container. Not plumbed into the system, but there as a reserve for refill if needed.With present frame way of building, you may need more than tabs, and to be honest, a pretty big difference between 5 or 10 gal... like in 100% difference. And of course you got weight and balance things to contend with. I don't mean to be cynical here, but there might be exactly what you wanting, already designed/tested and flying out there. Generally it is not as easy as adding this or that.. Just saying.AVIONICSGarmin AERA 796 with XM weather (already have it)Electronic engine monitorMounted antenna for portable av radioAnalog fuel gauge and fuel flow as backupBack up to your sight gages? Just playing devil advocate here! Food for thought!SO are there any other "must have" items that I have missed? I am trying not to get into the area of big engineering changes, as I am generally happy with the design as it is. I thank everyone for your assistance, and I am looking forward to the project.So