My numbers aren't even close to yours, but here is a link that will give you the info you're asking and a factual example of why numbers are only part of the equation, as you well know. Yes all in good fun, I enjoy your posts on here and have for a long time. I'll be taking my Mrs to some appointments and likely can't make lunch, but you never know. I honestly do want to meet you one day and honestly would love to run our bikes to earn some Forum bragging rights. The fuel moto dyno sheet in the post I'm linking is legit and that is the bike my Chieftain smoked 3 times and both knew there was no reason to run them again until he upped his game.... Very good friend of mine from here at work is the owner of the Road Glide...
I would imagine that any shop that has done the BBK is good at dropping the motor and could do a set of springs in 4 hours or less. For those of us that have never done it, double or triple that time. Kind of like cams. I've talked to guys that can do it in 30 minutes where it took me 2 hours...