#1: LTTs are almost separate asset class from generic "T-bonds". They have a long duration, 20+ years to maturity. I get this data from the VUSTX fund, which tracks a long bond index.

#2: We used leverage to match volatility. This can realistically be done using futures. (and yes, I am claiming a leveraged bond portfolio is less risky than a 100% stock portfolio; the numbers back it!)