[David Brown]

I have owned my 1970 Bonneville Convertible since 1979. 69 &70 big cars shared a lot of parts, and a lot of parts are 69 & 70 only. I agree with Blubomber pretty much on price, although maybe a tad optimistic. One of the dificult things if you are looking to sell is demand. There are many many more people looking for GTO's and Firebirds than are for big cars, so your sales opportunity is definitely less.

That said, I love my Bonneville! It is solid, powerful, nice ride and a great car to take a trip in. My wife and I have driven from south Florida to the North Carolina mountains many times. It has an incredible trunk that has enough room that the wife can pack anything she wants. I wound up installing a set of super lifts so when we loaded her up for a vacation, it would still ride level.

I would think these are poor alternatives if your intention is to buy, restore and resell at a profit, unless it's real solid to start with and you buy it right. In my case, I don't ever want to sell mine. So I don't care how much I have in my car, because divided by the 32 years I have owned her (and counting), she is a bargain. And nice big cars, especially convertibles are usually appreciated at car shows because you don't usually see too many of them. Only once in 32 years have I ever seen another 70 Bonne Vert at a show where I had my car, and that was a Daytona Turkey run back in the 90's.

69 and 70 Bonneville's had the 428 and 455 as the standard engine. Hey, the big engines were originally designed and intended for the big cars. Yes the optional big engines do offer some potential advantages over the standard 2 bolt engines, but talk to any of the engine builders and they will tell you the 2 bolt Pontiac engine is not an issue unless you are geting up in the 650-700+ power arena. Don't confuse the Pontiac block with a Chevy small block that has a very weak bottom end that needs 4 bolt if it's making any real power. My 455 is a 2 bolt, but drilled for 4, if you are planning a serious buildup. I believe all were drilled for 4 bolt. I changed my #15 small valve heads years ago to 6X with larger exhaust valves mainly to lower compression. Even with the small valve head 360 horse version, it was 10:1 compression and pinged on todays 93 octane, unless you backed off the timing.